Issued Patents All Time
Showing 101–114 of 114 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6236453 | Lens meter | Yukio Ikezawa, Eiichi Yanagi, Takeyuki Kato | 2001-05-22 |
| 6061123 | Lens meter | Yukio Ikezawa, Eiichi Yanagi, Takeyuki Kato | 2000-05-09 |
| 5971537 | Lens specifying apparatus | Yukio Ikezawa, Takeyuki Kato | 1999-10-26 |
| 5973772 | Layout judgment apparatus and layout judgment system | Kouichi Matsumoto, Yukio Ikezawa, Eiichi Yanagi, Takeyuki Kato | 1999-10-26 |
| 5910836 | Lens meter | Yukio Ikezawa, Eiichi Yanagi, Takeyuki Kato | 1999-06-08 |
| 5886780 | Refractometer with deflecting element | Takefumi Hayashi, Kazuhiko Tamura | 1999-03-23 |
| 5621488 | Apparatus for imaging and diagnosing a cornea | Yoshihiko Hanamura, Kouji Nishio | 1997-04-15 |
| 5071245 | Ocular refracting power measuring system | Akio Umeda, Ikuo Kitao, Noriyuki Nagai, Yasuhisa Ishikura, Kazutoshi Uchida | 1991-12-10 |
| 4859051 | Eye testing apparatus | Ikuo Kitao, Yasuo Kato | 1989-08-22 |
| 4828385 | Autolensmeter | Akihiro Arai | 1989-05-09 |
| 4810085 | Corneal configuration measuring apparatus | Yoshinori Oana, Akihiro Arai | 1989-03-07 |
| 4796989 | Opthalmological measuring apparatus | Yoshinori Oana, Akihiro Arai | 1989-01-10 |
| 4761070 | Eye refractometer | — | 1988-08-02 |
| 4744648 | Eye refractive power measuring apparatus | Yasuo Kato, Kiwami Horiguchi, Kiichi Kamiyama | 1988-05-17 |